答案
was issued by President A. Lincoln in on September 22， 1862，which would liberated all slaves of the seceded states that refused to return to the Union before the Proclamation went into effect on January 1，1863. It was one of the most important measures taken by Lincoln's Administration in 1862 in order to change the situation of the Civil War.
问题 更新时间2023/4/3 12:59:00
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